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A fuzzy relation space for group decision theory   总被引:1,自引:0,他引:1  
In this paper reciprocal relations over n alternatives are defined, and their efficacy as a model of the group decision process is investigated. Several measures of individual preference and group consensus are defined and analyzed, and are used to generate associated measures of distance to consensus. Various decision oriented goals are identified, and we characterize these goals geometrically as subsets of a convex subset of a hyperplane in Rn. An application of this model for assessing degree of consensus is given.  相似文献
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This paper proposes a comprehensive Multiple Criteria Group Decision Making (MCGDM) method with probabilistic linguistic information based on a new consensus measure and a novel outranking method, Gained and Lost Dominance Score (GLDS). Firstly, new operations of the probabilistic linguistic term sets are introduced based on the adjusted rules of probabilistic linguistic term sets and the linguistic scale functions for semantics of linguistic terms. After defining a new consensus measure based on the correlation degree between probabilistic linguistic term sets, we develop a consensus reaching method to improve the consensus degree of a group. To rank alternatives reasonably, we further propose the GLDS method which considers both the “group utility” and the “individual regret” values. The core of the GLDS is to calculate the gained and lost dominance scores that the optimal solution dominates all other alternatives in terms of the net gained dominance flow and the net lost dominance flow. Then, we integrate the GLDS ranking method with the consensus reaching process and develop a consensus-based PL-GLDS method to solve the MCGDM problems with probabilistic linguistic information. Finally, the proposed method is validated by a case study of selecting optimal green enterprises. Some comparative analyses are given to show the efficiency of the proposed method.  相似文献
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决策个体之间的共识达成是提升群决策可信性的重要保证. 为处理极端值导致的决策失效问题,首先将信息进行预处理,然后应用定义的个体与群体之间的共识测度, 构建可以定位与修正非共识决策信息的直觉模糊共识模型, 并建立一种多属性群决策方法,以确保个体信息集结之前达成阈值条件下的共识.通过对投资对象选择的实例研究, 证明了该方法的有效性并选出最优方案.  相似文献
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